The defensively-challenged Cowboys had a chance to address their secondary last year with the No. 18 overall pick in the draft. Instead, they traded the pick to the 49ers, who took LSU safety Eric Reid. …

Davis’ streak of 64 consecutive starts to open his career will be snapped Sunday when the 49ers visit the Cowboys in their season opener on Sunday. Davis, who hasn’t practiced this week, has been ruled out with a hamstring injury. …

Niners defensive tackle Ray McDonald will play in the season opener at Dallas on Sunday, a week after he was arrested on suspicion of felony domestic violence. “Yes,” Jim Harbaugh said when asked if McDonald would play against the Cowboys. “As it stands now, yes.” …